What is a NES 930 receptacle and what do they use it for. Is it a 4 wire receptacle and if so can the ground and neutral be tied together? I think this is being used in a mobile home.

Thanks

I am not sure what an NES 930 device is, are you sure it is not an IEC 309, otherwise known as International Standard IEC 60309?

Does what you have look anything like the photo I added?

These are Pin & Sleeve devices, normally used for industrial, marine, computer data centers applications, and any other where a positive, heavy duty,waterproof connection is needed.

They come in various voltage and amperage sizes with 3,4, or 5 pins for single and 3 phase with or without neutrals.

No any neutral and ground cannot be jumped out, especially for a mobile home.

If this is not what you have can you provide a picture?